2 Copyright (C) 2000-2018 Free Software Foundation, Inc.
3 Contributed by Andy Vaught & Niels Kristian Bech Jensen
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 3, or (at your option) any later
12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
21 /* Handle the inevitable errors. A major catch here is that things
22 flagged as errors in one match subroutine can conceivably be legal
23 elsewhere. This means that error messages are recorded and saved
24 for possible use later. If a line does not match a legal
25 construction, then the saved error message is reported. */
29 #include "coretypes.h"
33 #include "diagnostic.h"
34 #include "diagnostic-color.h"
35 #include "tree-diagnostic.h" /* tree_diagnostics_defaults */
37 static int suppress_errors
= 0;
39 static bool warnings_not_errors
= false;
41 static int terminal_width
;
43 /* True if the error/warnings should be buffered. */
44 static bool buffered_p
;
46 static gfc_error_buffer error_buffer
;
47 /* These are always buffered buffers (.flush_p == false) to be used by
48 the pretty-printer. */
49 static output_buffer
*pp_error_buffer
, *pp_warning_buffer
;
50 static int warningcount_buffered
, werrorcount_buffered
;
52 /* Return true if there output_buffer is empty. */
55 gfc_output_buffer_empty_p (const output_buffer
* buf
)
57 return output_buffer_last_position_in_text (buf
) == NULL
;
60 /* Go one level deeper suppressing errors. */
63 gfc_push_suppress_errors (void)
65 gcc_assert (suppress_errors
>= 0);
70 gfc_error_opt (int opt
, const char *gmsgid
, va_list ap
) ATTRIBUTE_GCC_GFC(2,0);
73 gfc_warning (int opt
, const char *gmsgid
, va_list ap
) ATTRIBUTE_GCC_GFC(2,0);
76 /* Leave one level of error suppressing. */
79 gfc_pop_suppress_errors (void)
81 gcc_assert (suppress_errors
> 0);
86 /* Determine terminal width (for trimming source lines in output). */
89 gfc_get_terminal_width (void)
91 return isatty (STDERR_FILENO
) ? get_terminal_width () : INT_MAX
;
95 /* Per-file error initialization. */
98 gfc_error_init_1 (void)
100 terminal_width
= gfc_get_terminal_width ();
101 gfc_buffer_error (false);
105 /* Set the flag for buffering errors or not. */
108 gfc_buffer_error (bool flag
)
114 /* Add a single character to the error buffer or output depending on
120 /* FIXME: Unused function to be removed in a subsequent patch. */
124 /* Copy a string to wherever it needs to go. */
127 error_string (const char *p
)
134 /* Print a formatted integer to the error buffer or output. */
139 error_uinteger (unsigned long int i
)
141 char *p
, int_buf
[IBUF_LEN
];
143 p
= int_buf
+ IBUF_LEN
- 1;
155 error_string (p
+ 1);
159 error_integer (long int i
)
165 u
= (unsigned long int) -i
;
176 gfc_widechar_display_length (gfc_char_t c
)
178 if (gfc_wide_is_printable (c
) || c
== '\t')
179 /* Printable ASCII character, or tabulation (output as a space). */
181 else if (c
< ((gfc_char_t
) 1 << 8))
182 /* Displayed as \x?? */
184 else if (c
< ((gfc_char_t
) 1 << 16))
185 /* Displayed as \u???? */
188 /* Displayed as \U???????? */
193 /* Length of the ASCII representation of the wide string, escaping wide
194 characters as print_wide_char_into_buffer() does. */
197 gfc_wide_display_length (const gfc_char_t
*str
)
201 for (i
= 0, len
= 0; str
[i
]; i
++)
202 len
+= gfc_widechar_display_length (str
[i
]);
208 print_wide_char_into_buffer (gfc_char_t c
, char *buf
)
210 static const char xdigit
[16] = { '0', '1', '2', '3', '4', '5', '6',
211 '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
213 if (gfc_wide_is_printable (c
) || c
== '\t')
216 /* Tabulation is output as a space. */
217 buf
[0] = (unsigned char) (c
== '\t' ? ' ' : c
);
220 else if (c
< ((gfc_char_t
) 1 << 8))
223 buf
[3] = xdigit
[c
& 0x0F];
225 buf
[2] = xdigit
[c
& 0x0F];
231 else if (c
< ((gfc_char_t
) 1 << 16))
234 buf
[5] = xdigit
[c
& 0x0F];
236 buf
[4] = xdigit
[c
& 0x0F];
238 buf
[3] = xdigit
[c
& 0x0F];
240 buf
[2] = xdigit
[c
& 0x0F];
249 buf
[9] = xdigit
[c
& 0x0F];
251 buf
[8] = xdigit
[c
& 0x0F];
253 buf
[7] = xdigit
[c
& 0x0F];
255 buf
[6] = xdigit
[c
& 0x0F];
257 buf
[5] = xdigit
[c
& 0x0F];
259 buf
[4] = xdigit
[c
& 0x0F];
261 buf
[3] = xdigit
[c
& 0x0F];
263 buf
[2] = xdigit
[c
& 0x0F];
271 static char wide_char_print_buffer
[11];
274 gfc_print_wide_char (gfc_char_t c
)
276 print_wide_char_into_buffer (c
, wide_char_print_buffer
);
277 return wide_char_print_buffer
;
281 /* Show the file, where it was included, and the source line, give a
282 locus. Calls error_printf() recursively, but the recursion is at
283 most one level deep. */
285 static void error_printf (const char *, ...) ATTRIBUTE_GCC_GFC(1,2);
288 show_locus (locus
*loc
, int c1
, int c2
)
295 /* TODO: Either limit the total length and number of included files
296 displayed or add buffering of arbitrary number of characters in
299 /* Write out the error header line, giving the source file and error
300 location (in GNU standard "[file]:[line].[column]:" format),
301 followed by an "included by" stack and a blank line. This header
302 format is matched by a testsuite parser defined in
303 lib/gfortran-dg.exp. */
308 error_string (f
->filename
);
311 error_integer (LOCATION_LINE (lb
->location
));
313 if ((c1
> 0) || (c2
> 0))
319 if ((c1
> 0) && (c2
> 0))
330 i
= f
->inclusion_line
;
333 if (f
== NULL
) break;
335 error_printf (" Included at %s:%d:", f
->filename
, i
);
340 /* Calculate an appropriate horizontal offset of the source line in
341 order to get the error locus within the visible portion of the
342 line. Note that if the margin of 5 here is changed, the
343 corresponding margin of 10 in show_loci should be changed. */
347 /* If the two loci would appear in the same column, we shift
348 '2' one column to the right, so as to print '12' rather than
349 just '1'. We do this here so it will be accounted for in the
350 margin calculations. */
355 cmax
= (c1
< c2
) ? c2
: c1
;
356 if (cmax
> terminal_width
- 5)
357 offset
= cmax
- terminal_width
+ 5;
359 /* Show the line itself, taking care not to print more than what can
360 show up on the terminal. Tabs are converted to spaces, and
361 nonprintable characters are converted to a "\xNN" sequence. */
363 p
= &(lb
->line
[offset
]);
364 i
= gfc_wide_display_length (p
);
365 if (i
> terminal_width
)
366 i
= terminal_width
- 1;
370 static char buffer
[11];
371 i
-= print_wide_char_into_buffer (*p
++, buffer
);
372 error_string (buffer
);
377 /* Show the '1' and/or '2' corresponding to the column of the error
378 locus. Note that a value of -1 for c1 or c2 will simply cause
379 the relevant number not to be printed. */
385 p
= &(lb
->line
[offset
]);
386 for (i
= 0; i
< cmax
; i
++)
389 spaces
= gfc_widechar_display_length (*p
++);
392 error_char ('1'), spaces
--;
394 error_char ('2'), spaces
--;
396 for (j
= 0; j
< spaces
; j
++)
410 /* As part of printing an error, we show the source lines that caused
411 the problem. We show at least one, and possibly two loci; the two
412 loci may or may not be on the same source line. */
415 show_loci (locus
*l1
, locus
*l2
)
419 if (l1
== NULL
|| l1
->lb
== NULL
)
421 error_printf ("<During initialization>\n");
425 /* While calculating parameters for printing the loci, we consider possible
426 reasons for printing one per line. If appropriate, print the loci
427 individually; otherwise we print them both on the same line. */
429 c1
= l1
->nextc
- l1
->lb
->line
;
432 show_locus (l1
, c1
, -1);
436 c2
= l2
->nextc
- l2
->lb
->line
;
443 /* Note that the margin value of 10 here needs to be less than the
444 margin of 5 used in the calculation of offset in show_locus. */
446 if (l1
->lb
!= l2
->lb
|| m
> terminal_width
- 10)
448 show_locus (l1
, c1
, -1);
449 show_locus (l2
, -1, c2
);
453 show_locus (l1
, c1
, c2
);
459 /* Workhorse for the error printing subroutines. This subroutine is
460 inspired by g77's error handling and is similar to printf() with
461 the following %-codes:
463 %c Character, %d or %i Integer, %s String, %% Percent
464 %L Takes locus argument
465 %C Current locus (no argument)
467 If a locus pointer is given, the actual source line is printed out
468 and the column is indicated. Since we want the error message at
469 the bottom of any source file information, we must scan the
470 argument list twice -- once to determine whether the loci are
471 present and record this for printing, and once to print the error
472 message after and loci have been printed. A maximum of two locus
473 arguments are permitted.
475 This function is also called (recursively) by show_locus in the
476 case of included files; however, as show_locus does not resupply
477 any loci, the recursion is at most one level deep. */
481 static void ATTRIBUTE_GCC_GFC(2,0)
482 error_print (const char *type
, const char *format0
, va_list argp
)
484 enum { TYPE_CURRENTLOC
, TYPE_LOCUS
, TYPE_INTEGER
, TYPE_UINTEGER
,
485 TYPE_LONGINT
, TYPE_ULONGINT
, TYPE_CHAR
, TYPE_STRING
,
494 unsigned int uintval
;
496 unsigned long int ulongintval
;
498 const char * stringval
;
500 } arg
[MAX_ARGS
], spec
[MAX_ARGS
];
501 /* spec is the array of specifiers, in the same order as they
502 appear in the format string. arg is the array of arguments,
503 in the same order as they appear in the va_list. */
506 int i
, n
, have_l1
, pos
, maxpos
;
507 locus
*l1
, *l2
, *loc
;
510 loc
= l1
= l2
= NULL
;
519 for (i
= 0; i
< MAX_ARGS
; i
++)
521 arg
[i
].type
= NOTYPE
;
525 /* First parse the format string for position specifiers. */
538 if (ISDIGIT (*format
))
540 /* This is a position specifier. For example, the number
541 12 in the format string "%12$d", which specifies the third
542 argument of the va_list, formatted in %d format.
543 For details, see "man 3 printf". */
544 pos
= atoi(format
) - 1;
545 gcc_assert (pos
>= 0);
546 while (ISDIGIT(*format
))
548 gcc_assert (*format
== '$');
562 arg
[pos
].type
= TYPE_CURRENTLOC
;
566 arg
[pos
].type
= TYPE_LOCUS
;
571 arg
[pos
].type
= TYPE_INTEGER
;
575 arg
[pos
].type
= TYPE_UINTEGER
;
581 arg
[pos
].type
= TYPE_ULONGINT
;
582 else if (c
== 'i' || c
== 'd')
583 arg
[pos
].type
= TYPE_LONGINT
;
589 arg
[pos
].type
= TYPE_CHAR
;
593 arg
[pos
].type
= TYPE_STRING
;
603 /* Then convert the values for each %-style argument. */
604 for (pos
= 0; pos
<= maxpos
; pos
++)
606 gcc_assert (arg
[pos
].type
!= NOTYPE
);
607 switch (arg
[pos
].type
)
609 case TYPE_CURRENTLOC
:
610 loc
= &gfc_current_locus
;
614 if (arg
[pos
].type
== TYPE_LOCUS
)
615 loc
= va_arg (argp
, locus
*);
620 arg
[pos
].u
.stringval
= "(2)";
626 arg
[pos
].u
.stringval
= "(1)";
631 arg
[pos
].u
.intval
= va_arg (argp
, int);
635 arg
[pos
].u
.uintval
= va_arg (argp
, unsigned int);
639 arg
[pos
].u
.longintval
= va_arg (argp
, long int);
643 arg
[pos
].u
.ulongintval
= va_arg (argp
, unsigned long int);
647 arg
[pos
].u
.charval
= (char) va_arg (argp
, int);
651 arg
[pos
].u
.stringval
= (const char *) va_arg (argp
, char *);
659 for (n
= 0; spec
[n
].pos
>= 0; n
++)
660 spec
[n
].u
= arg
[spec
[n
].pos
].u
;
662 /* Show the current loci if we have to. */
676 for (; *format
; format
++)
680 error_char (*format
);
685 if (ISDIGIT (*format
))
687 /* This is a position specifier. See comment above. */
688 while (ISDIGIT (*format
))
691 /* Skip over the dollar sign. */
702 error_char (spec
[n
++].u
.charval
);
706 case 'C': /* Current locus */
707 case 'L': /* Specified locus */
708 error_string (spec
[n
++].u
.stringval
);
713 error_integer (spec
[n
++].u
.intval
);
717 error_uinteger (spec
[n
++].u
.uintval
);
723 error_uinteger (spec
[n
++].u
.ulongintval
);
725 error_integer (spec
[n
++].u
.longintval
);
735 /* Wrapper for error_print(). */
738 error_printf (const char *gmsgid
, ...)
742 va_start (argp
, gmsgid
);
743 error_print ("", _(gmsgid
), argp
);
748 /* Clear any output buffered in a pretty-print output_buffer. */
751 gfc_clear_pp_buffer (output_buffer
*this_buffer
)
753 pretty_printer
*pp
= global_dc
->printer
;
754 output_buffer
*tmp_buffer
= pp
->buffer
;
755 pp
->buffer
= this_buffer
;
756 pp_clear_output_area (pp
);
757 pp
->buffer
= tmp_buffer
;
758 /* We need to reset last_location, otherwise we may skip caret lines
759 when we actually give a diagnostic. */
760 global_dc
->last_location
= UNKNOWN_LOCATION
;
764 /* This is just a helper function to avoid duplicating the logic of
768 gfc_warning (int opt
, const char *gmsgid
, va_list ap
)
773 diagnostic_info diagnostic
;
774 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
775 bool fatal_errors
= global_dc
->fatal_errors
;
776 pretty_printer
*pp
= global_dc
->printer
;
777 output_buffer
*tmp_buffer
= pp
->buffer
;
779 gfc_clear_pp_buffer (pp_warning_buffer
);
783 pp
->buffer
= pp_warning_buffer
;
784 global_dc
->fatal_errors
= false;
785 /* To prevent -fmax-errors= triggering. */
789 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
,
791 diagnostic
.option_index
= opt
;
792 bool ret
= diagnostic_report_diagnostic (global_dc
, &diagnostic
);
796 pp
->buffer
= tmp_buffer
;
797 global_dc
->fatal_errors
= fatal_errors
;
799 warningcount_buffered
= 0;
800 werrorcount_buffered
= 0;
801 /* Undo the above --werrorcount if not Werror, otherwise
802 werrorcount is correct already. */
805 else if (diagnostic
.kind
== DK_ERROR
)
806 ++werrorcount_buffered
;
808 ++werrorcount
, --warningcount
, ++warningcount_buffered
;
815 /* Issue a warning. */
818 gfc_warning (int opt
, const char *gmsgid
, ...)
822 va_start (argp
, gmsgid
);
823 bool ret
= gfc_warning (opt
, gmsgid
, argp
);
829 /* Whether, for a feature included in a given standard set (GFC_STD_*),
830 we should issue an error or a warning, or be quiet. */
833 gfc_notification_std (int std
)
837 warning
= ((gfc_option
.warn_std
& std
) != 0) && !inhibit_warnings
;
838 if ((gfc_option
.allow_std
& std
) != 0 && !warning
)
841 return warning
? WARNING
: ERROR
;
845 /* Return a string describing the nature of a standard violation
846 * and/or the relevant version of the standard. */
849 notify_std_msg(int std
)
852 if (std
& GFC_STD_F2018_DEL
)
853 return _("Fortran 2018 deleted feature:");
854 else if (std
& GFC_STD_F2018_OBS
)
855 return _("Fortran 2018 obsolescent feature:");
856 else if (std
& GFC_STD_F2018
)
857 return _("Fortran 2018:");
858 else if (std
& GFC_STD_F2008_OBS
)
859 return _("Fortran 2008 obsolescent feature:");
860 else if (std
& GFC_STD_F2008
)
861 return "Fortran 2008:";
862 else if (std
& GFC_STD_F2003
)
863 return "Fortran 2003:";
864 else if (std
& GFC_STD_GNU
)
865 return _("GNU Extension:");
866 else if (std
& GFC_STD_LEGACY
)
867 return _("Legacy Extension:");
868 else if (std
& GFC_STD_F95_OBS
)
869 return _("Obsolescent feature:");
870 else if (std
& GFC_STD_F95_DEL
)
871 return _("Deleted feature:");
877 /* Possibly issue a warning/error about use of a nonstandard (or deleted)
878 feature. An error/warning will be issued if the currently selected
879 standard does not contain the requested bits. Return false if
880 an error is generated. */
883 gfc_notify_std (int std
, const char *gmsgid
, ...)
886 const char *msg
, *msg2
;
889 /* Determine whether an error or a warning is needed. */
890 const int wstd
= std
& gfc_option
.warn_std
; /* Standard to warn about. */
891 const int estd
= std
& ~gfc_option
.allow_std
; /* Standard to error about. */
892 const bool warning
= (wstd
!= 0) && !inhibit_warnings
;
893 const bool error
= (estd
!= 0);
895 if (!error
&& !warning
)
901 msg
= notify_std_msg (estd
);
903 msg
= notify_std_msg (wstd
);
906 buffer
= (char *) alloca (strlen (msg
) + strlen (msg2
) + 2);
907 strcpy (buffer
, msg
);
908 strcat (buffer
, " ");
909 strcat (buffer
, msg2
);
911 va_start (argp
, gmsgid
);
913 gfc_error_opt (0, buffer
, argp
);
915 gfc_warning (0, buffer
, argp
);
921 return (warning
&& !warnings_are_errors
);
925 /* Called from output_format -- during diagnostic message processing
926 to handle Fortran specific format specifiers with the following meanings:
928 %C Current locus (no argument)
929 %L Takes locus argument
932 gfc_format_decoder (pretty_printer
*pp
, text_info
*text
, const char *spec
,
933 int precision
, bool wide
, bool set_locus
, bool hash
,
934 bool *quoted
, const char **buffer_ptr
)
941 static const char *result
[2] = { "(1)", "(2)" };
944 loc
= &gfc_current_locus
;
946 loc
= va_arg (*text
->args_ptr
, locus
*);
947 gcc_assert (loc
->nextc
- loc
->lb
->line
>= 0);
948 unsigned int offset
= loc
->nextc
- loc
->lb
->line
;
949 /* If location[0] != UNKNOWN_LOCATION means that we already
950 processed one of %C/%L. */
951 int loc_num
= text
->get_location (0) == UNKNOWN_LOCATION
? 0 : 1;
953 = linemap_position_for_loc_and_offset (line_table
,
956 text
->set_location (loc_num
, src_loc
, SHOW_RANGE_WITH_CARET
);
957 pp_string (pp
, result
[loc_num
]);
961 /* Fall through info the middle-end decoder, as e.g. stor-layout.c
962 etc. diagnostics can use the FE printer while the FE is still
964 return default_tree_printer (pp
, text
, spec
, precision
, wide
,
965 set_locus
, hash
, quoted
, buffer_ptr
);
969 /* Return a malloc'd string describing the kind of diagnostic. The
970 caller is responsible for freeing the memory. */
972 gfc_diagnostic_build_kind_prefix (diagnostic_context
*context
,
973 const diagnostic_info
*diagnostic
)
975 static const char *const diagnostic_kind_text
[] = {
976 #define DEFINE_DIAGNOSTIC_KIND(K, T, C) (T),
977 #include "gfc-diagnostic.def"
978 #undef DEFINE_DIAGNOSTIC_KIND
981 static const char *const diagnostic_kind_color
[] = {
982 #define DEFINE_DIAGNOSTIC_KIND(K, T, C) (C),
983 #include "gfc-diagnostic.def"
984 #undef DEFINE_DIAGNOSTIC_KIND
987 gcc_assert (diagnostic
->kind
< DK_LAST_DIAGNOSTIC_KIND
);
988 const char *text
= _(diagnostic_kind_text
[diagnostic
->kind
]);
989 const char *text_cs
= "", *text_ce
= "";
990 pretty_printer
*pp
= context
->printer
;
992 if (diagnostic_kind_color
[diagnostic
->kind
])
994 text_cs
= colorize_start (pp_show_color (pp
),
995 diagnostic_kind_color
[diagnostic
->kind
]);
996 text_ce
= colorize_stop (pp_show_color (pp
));
998 return build_message_string ("%s%s:%s ", text_cs
, text
, text_ce
);
1001 /* Return a malloc'd string describing a location. The caller is
1002 responsible for freeing the memory. */
1004 gfc_diagnostic_build_locus_prefix (diagnostic_context
*context
,
1005 expanded_location s
)
1007 pretty_printer
*pp
= context
->printer
;
1008 const char *locus_cs
= colorize_start (pp_show_color (pp
), "locus");
1009 const char *locus_ce
= colorize_stop (pp_show_color (pp
));
1010 return (s
.file
== NULL
1011 ? build_message_string ("%s%s:%s", locus_cs
, progname
, locus_ce
)
1012 : !strcmp (s
.file
, N_("<built-in>"))
1013 ? build_message_string ("%s%s:%s", locus_cs
, s
.file
, locus_ce
)
1014 : context
->show_column
1015 ? build_message_string ("%s%s:%d:%d:%s", locus_cs
, s
.file
, s
.line
,
1017 : build_message_string ("%s%s:%d:%s", locus_cs
, s
.file
, s
.line
, locus_ce
));
1020 /* Return a malloc'd string describing two locations. The caller is
1021 responsible for freeing the memory. */
1023 gfc_diagnostic_build_locus_prefix (diagnostic_context
*context
,
1024 expanded_location s
, expanded_location s2
)
1026 pretty_printer
*pp
= context
->printer
;
1027 const char *locus_cs
= colorize_start (pp_show_color (pp
), "locus");
1028 const char *locus_ce
= colorize_stop (pp_show_color (pp
));
1030 return (s
.file
== NULL
1031 ? build_message_string ("%s%s:%s", locus_cs
, progname
, locus_ce
)
1032 : !strcmp (s
.file
, N_("<built-in>"))
1033 ? build_message_string ("%s%s:%s", locus_cs
, s
.file
, locus_ce
)
1034 : context
->show_column
1035 ? build_message_string ("%s%s:%d:%d-%d:%s", locus_cs
, s
.file
, s
.line
,
1036 MIN (s
.column
, s2
.column
),
1037 MAX (s
.column
, s2
.column
), locus_ce
)
1038 : build_message_string ("%s%s:%d:%s", locus_cs
, s
.file
, s
.line
,
1042 /* This function prints the locus (file:line:column), the diagnostic kind
1043 (Error, Warning) and (optionally) the relevant lines of code with
1044 annotation lines with '1' and/or '2' below them.
1046 With -fdiagnostic-show-caret (the default) it prints:
1048 [locus of primary range]:
1052 Error: Some error at (1)
1054 With -fno-diagnostic-show-caret or if the primary range is not
1057 [locus of primary range]: Error: Some error at (1) and (2)
1060 gfc_diagnostic_starter (diagnostic_context
*context
,
1061 diagnostic_info
*diagnostic
)
1063 char * kind_prefix
= gfc_diagnostic_build_kind_prefix (context
, diagnostic
);
1065 expanded_location s1
= diagnostic_expand_location (diagnostic
);
1066 expanded_location s2
;
1067 bool one_locus
= diagnostic
->richloc
->get_num_locations () < 2;
1068 bool same_locus
= false;
1072 s2
= diagnostic_expand_location (diagnostic
, 1);
1073 same_locus
= diagnostic_same_line (context
, s1
, s2
);
1076 char * locus_prefix
= (one_locus
|| !same_locus
)
1077 ? gfc_diagnostic_build_locus_prefix (context
, s1
)
1078 : gfc_diagnostic_build_locus_prefix (context
, s1
, s2
);
1080 if (!context
->show_caret
1081 || diagnostic_location (diagnostic
, 0) <= BUILTINS_LOCATION
1082 || diagnostic_location (diagnostic
, 0) == context
->last_location
)
1084 pp_set_prefix (context
->printer
,
1085 concat (locus_prefix
, " ", kind_prefix
, NULL
));
1086 free (locus_prefix
);
1088 if (one_locus
|| same_locus
)
1093 /* In this case, we print the previous locus and prefix as:
1095 [locus]:[prefix]: (1)
1097 and we flush with a new line before setting the new prefix. */
1098 pp_string (context
->printer
, "(1)");
1099 pp_newline (context
->printer
);
1100 locus_prefix
= gfc_diagnostic_build_locus_prefix (context
, s2
);
1101 pp_set_prefix (context
->printer
,
1102 concat (locus_prefix
, " ", kind_prefix
, NULL
));
1104 free (locus_prefix
);
1108 pp_verbatim (context
->printer
, "%s", locus_prefix
);
1109 free (locus_prefix
);
1110 /* Fortran uses an empty line between locus and caret line. */
1111 pp_newline (context
->printer
);
1112 diagnostic_show_locus (context
, diagnostic
->richloc
, diagnostic
->kind
);
1113 /* If the caret line was shown, the prefix does not contain the
1115 pp_set_prefix (context
->printer
, kind_prefix
);
1120 gfc_diagnostic_start_span (diagnostic_context
*context
,
1121 expanded_location exploc
)
1124 locus_prefix
= gfc_diagnostic_build_locus_prefix (context
, exploc
);
1125 pp_verbatim (context
->printer
, "%s", locus_prefix
);
1126 free (locus_prefix
);
1127 pp_newline (context
->printer
);
1128 /* Fortran uses an empty line between locus and caret line. */
1129 pp_newline (context
->printer
);
1134 gfc_diagnostic_finalizer (diagnostic_context
*context
,
1135 diagnostic_info
*diagnostic ATTRIBUTE_UNUSED
)
1137 pp_destroy_prefix (context
->printer
);
1138 pp_newline_and_flush (context
->printer
);
1141 /* Immediate warning (i.e. do not buffer the warning) with an explicit
1145 gfc_warning_now_at (location_t loc
, int opt
, const char *gmsgid
, ...)
1148 diagnostic_info diagnostic
;
1149 rich_location
rich_loc (line_table
, loc
);
1152 va_start (argp
, gmsgid
);
1153 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
, DK_WARNING
);
1154 diagnostic
.option_index
= opt
;
1155 ret
= diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1160 /* Immediate warning (i.e. do not buffer the warning). */
1163 gfc_warning_now (int opt
, const char *gmsgid
, ...)
1166 diagnostic_info diagnostic
;
1167 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
1170 va_start (argp
, gmsgid
);
1171 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
,
1173 diagnostic
.option_index
= opt
;
1174 ret
= diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1179 /* Internal warning, do not buffer. */
1182 gfc_warning_internal (int opt
, const char *gmsgid
, ...)
1185 diagnostic_info diagnostic
;
1186 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
1189 va_start (argp
, gmsgid
);
1190 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
,
1192 diagnostic
.option_index
= opt
;
1193 ret
= diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1198 /* Immediate error (i.e. do not buffer). */
1201 gfc_error_now (const char *gmsgid
, ...)
1204 diagnostic_info diagnostic
;
1205 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
1207 error_buffer
.flag
= true;
1209 va_start (argp
, gmsgid
);
1210 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
, DK_ERROR
);
1211 diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1216 /* Fatal error, never returns. */
1219 gfc_fatal_error (const char *gmsgid
, ...)
1222 diagnostic_info diagnostic
;
1223 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
1225 va_start (argp
, gmsgid
);
1226 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
, DK_FATAL
);
1227 diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1233 /* Clear the warning flag. */
1236 gfc_clear_warning (void)
1238 gfc_clear_pp_buffer (pp_warning_buffer
);
1239 warningcount_buffered
= 0;
1240 werrorcount_buffered
= 0;
1244 /* Check to see if any warnings have been saved.
1245 If so, print the warning. */
1248 gfc_warning_check (void)
1250 if (! gfc_output_buffer_empty_p (pp_warning_buffer
))
1252 pretty_printer
*pp
= global_dc
->printer
;
1253 output_buffer
*tmp_buffer
= pp
->buffer
;
1254 pp
->buffer
= pp_warning_buffer
;
1255 pp_really_flush (pp
);
1256 warningcount
+= warningcount_buffered
;
1257 werrorcount
+= werrorcount_buffered
;
1258 gcc_assert (warningcount_buffered
+ werrorcount_buffered
== 1);
1259 pp
->buffer
= tmp_buffer
;
1260 diagnostic_action_after_output (global_dc
,
1261 warningcount_buffered
1262 ? DK_WARNING
: DK_ERROR
);
1263 diagnostic_check_max_errors (global_dc
, true);
1268 /* Issue an error. */
1271 gfc_error_opt (int opt
, const char *gmsgid
, va_list ap
)
1275 bool saved_abort_on_error
= false;
1277 if (warnings_not_errors
)
1279 gfc_warning (opt
, gmsgid
, argp
);
1284 if (suppress_errors
)
1290 diagnostic_info diagnostic
;
1291 rich_location
richloc (line_table
, UNKNOWN_LOCATION
);
1292 bool fatal_errors
= global_dc
->fatal_errors
;
1293 pretty_printer
*pp
= global_dc
->printer
;
1294 output_buffer
*tmp_buffer
= pp
->buffer
;
1296 gfc_clear_pp_buffer (pp_error_buffer
);
1300 /* To prevent -dH from triggering an abort on a buffered error,
1301 save abort_on_error and restore it below. */
1302 saved_abort_on_error
= global_dc
->abort_on_error
;
1303 global_dc
->abort_on_error
= false;
1304 pp
->buffer
= pp_error_buffer
;
1305 global_dc
->fatal_errors
= false;
1306 /* To prevent -fmax-errors= triggering, we decrease it before
1307 report_diagnostic increases it. */
1311 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &richloc
, DK_ERROR
);
1312 diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1316 pp
->buffer
= tmp_buffer
;
1317 global_dc
->fatal_errors
= fatal_errors
;
1318 global_dc
->abort_on_error
= saved_abort_on_error
;
1327 gfc_error_opt (int opt
, const char *gmsgid
, ...)
1330 va_start (argp
, gmsgid
);
1331 gfc_error_opt (opt
, gmsgid
, argp
);
1337 gfc_error (const char *gmsgid
, ...)
1340 va_start (argp
, gmsgid
);
1341 gfc_error_opt (0, gmsgid
, argp
);
1346 /* This shouldn't happen... but sometimes does. */
1349 gfc_internal_error (const char *gmsgid
, ...)
1353 diagnostic_info diagnostic
;
1354 rich_location
rich_loc (line_table
, UNKNOWN_LOCATION
);
1356 gfc_get_errors (&w
, &e
);
1360 va_start (argp
, gmsgid
);
1361 diagnostic_set_info (&diagnostic
, gmsgid
, &argp
, &rich_loc
, DK_ICE
);
1362 diagnostic_report_diagnostic (global_dc
, &diagnostic
);
1369 /* Clear the error flag when we start to compile a source line. */
1372 gfc_clear_error (void)
1374 error_buffer
.flag
= 0;
1375 warnings_not_errors
= false;
1376 gfc_clear_pp_buffer (pp_error_buffer
);
1380 /* Tests the state of error_flag. */
1383 gfc_error_flag_test (void)
1385 return error_buffer
.flag
1386 || !gfc_output_buffer_empty_p (pp_error_buffer
);
1390 /* Check to see if any errors have been saved.
1391 If so, print the error. Returns the state of error_flag. */
1394 gfc_error_check (void)
1396 if (error_buffer
.flag
1397 || ! gfc_output_buffer_empty_p (pp_error_buffer
))
1399 error_buffer
.flag
= false;
1400 pretty_printer
*pp
= global_dc
->printer
;
1401 output_buffer
*tmp_buffer
= pp
->buffer
;
1402 pp
->buffer
= pp_error_buffer
;
1403 pp_really_flush (pp
);
1405 gcc_assert (gfc_output_buffer_empty_p (pp_error_buffer
));
1406 pp
->buffer
= tmp_buffer
;
1407 diagnostic_action_after_output (global_dc
, DK_ERROR
);
1408 diagnostic_check_max_errors (global_dc
, true);
1415 /* Move the text buffered from FROM to TO, then clear
1416 FROM. Independently if there was text in FROM, TO is also
1420 gfc_move_error_buffer_from_to (gfc_error_buffer
* buffer_from
,
1421 gfc_error_buffer
* buffer_to
)
1423 output_buffer
* from
= &(buffer_from
->buffer
);
1424 output_buffer
* to
= &(buffer_to
->buffer
);
1426 buffer_to
->flag
= buffer_from
->flag
;
1427 buffer_from
->flag
= false;
1429 gfc_clear_pp_buffer (to
);
1430 /* We make sure this is always buffered. */
1431 to
->flush_p
= false;
1433 if (! gfc_output_buffer_empty_p (from
))
1435 const char *str
= output_buffer_formatted_text (from
);
1436 output_buffer_append_r (to
, str
, strlen (str
));
1437 gfc_clear_pp_buffer (from
);
1441 /* Save the existing error state. */
1444 gfc_push_error (gfc_error_buffer
*err
)
1446 gfc_move_error_buffer_from_to (&error_buffer
, err
);
1450 /* Restore a previous pushed error state. */
1453 gfc_pop_error (gfc_error_buffer
*err
)
1455 gfc_move_error_buffer_from_to (err
, &error_buffer
);
1459 /* Free a pushed error state, but keep the current error state. */
1462 gfc_free_error (gfc_error_buffer
*err
)
1464 gfc_clear_pp_buffer (&(err
->buffer
));
1468 /* Report the number of warnings and errors that occurred to the caller. */
1471 gfc_get_errors (int *w
, int *e
)
1474 *w
= warningcount
+ werrorcount
;
1476 *e
= errorcount
+ sorrycount
+ werrorcount
;
1480 /* Switch errors into warnings. */
1483 gfc_errors_to_warnings (bool f
)
1485 warnings_not_errors
= f
;
1489 gfc_diagnostics_init (void)
1491 diagnostic_starter (global_dc
) = gfc_diagnostic_starter
;
1492 global_dc
->start_span
= gfc_diagnostic_start_span
;
1493 diagnostic_finalizer (global_dc
) = gfc_diagnostic_finalizer
;
1494 diagnostic_format_decoder (global_dc
) = gfc_format_decoder
;
1495 global_dc
->caret_chars
[0] = '1';
1496 global_dc
->caret_chars
[1] = '2';
1497 pp_warning_buffer
= new (XNEW (output_buffer
)) output_buffer ();
1498 pp_warning_buffer
->flush_p
= false;
1499 /* pp_error_buffer is statically allocated. This simplifies memory
1500 management when using gfc_push/pop_error. */
1501 pp_error_buffer
= &(error_buffer
.buffer
);
1502 pp_error_buffer
->flush_p
= false;
1506 gfc_diagnostics_finish (void)
1508 tree_diagnostics_defaults (global_dc
);
1509 /* We still want to use the gfc starter and finalizer, not the tree
1511 diagnostic_starter (global_dc
) = gfc_diagnostic_starter
;
1512 diagnostic_finalizer (global_dc
) = gfc_diagnostic_finalizer
;
1513 global_dc
->caret_chars
[0] = '^';
1514 global_dc
->caret_chars
[1] = '^';